AIWA XDDV290
Instrukcja Serwisowa

5. RF/Servo Circuit
A.

CHECK POINT (General)

Does signal goes �High� to IC206 Pin 194 when the power is on?

NO

YES

Does signal pulse input to IC206 Pin when the power is on?

NO
58

,

59

Check �2.µ-COM Part�.

YES

Does TTL pulse output to IC206 Pin 140 , 142 ? YES

NO

Does 33.8688MHz clock input to IC206 Pin 63 ? YES

NO

Replace X301 or IC308 (30MHz clock defect)

Replace IC206 (IC206 soldering or IC defect).

Is IC206 Pin
83, 84 , 88 , 89

NO

voltage about 2.2V? YES

Replace IC700 (IC700 soldering or IC defect).

END

54